Inertia 20 H2O Daypack


Inertia 20 H2O Daypack

Inertia 20 H2O Daypack is available to buy in increments of 1

The Inertia 20 keeps a low profile and clean exterior that won’t slow you down as you tear up the trail. Bring a rain shell, hat, and gloves for changing conditions in the fall and spring, but leave your water bottle behind and fill up the included Gregory 3D Hydro reservoir.


  • Includes 3D Hydro quick drying, soft molded reservoir (3 Liter) with integrated drying hanger.
  • Dedicated zippered hydration sleeve with SpeedClip hydration hangar for a one-handed, snap-and-go connection.
  • Die-cut shoulder harness with magnetic sternum buckle and hose clip for the Drylock bite valve.
  • Breathable die-cut backpanel and removable webbing hipbelt.
  • Sunglass QuickStow system on shoulder harness for quick, secure and scratch-free access to your shades.
  • Top zippered pocket with key clip and front zippered pocket with soft touch liner to protect valuable items.
  • Front and dual side stretch mesh pockets for quick storage.
  • Trekking pole/tool attachment with bungee closure system.
  • Custom comfort-grip molded zipper pulls and molded webbing keepers for strap management.


Fits Torso 16" - 21” / 40.6 - 53.3cm
Weight 1.41lbs / 0.64kg
Volume 20L / 1220cu in.  
Max Carry Weight 20lbs / 9.1kg
Packed Dimensions 20.1" x 11.4" x 8.25" / 51cm x 29cm x 21cm
Ideal Fit For Men
Activity Day Hiking / Hydration
Compartment Access Panel  
Closure Type Zipper  
Number of External Pockets 5  
Hydration Compatible Yes
Hydration Reservoir Included Yes
Reservoir Capacity 3L
Hipbelt Included Yes
Removable Hipbelt Yes
Trekking Pole Attachment Yes


External Material 100% Nylon
Pack Body 210D Honeycomb CryptoRip Nylon
Pack Bottom 420D High Density Nylon
Lining 135D High Density Embossed Polyester
Suspension Multi-Density closed & open cell foam